@article{normpreservingorthogonalpermutationlinea,
  title = {Norm-preserving Orthogonal Permutation Linear Unit Activation Functions (OPLU)},
  author = {Artem Chernodub and Dimitri Nowicki},
  year = {2016},
  eprint = {1604.02313},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1604.02313v5},
}